Porous Shell Gas Diffusivity#

Porous Shell Gas Diffusivity = {model_name} <floatlist>

Description / Usage#

This card is used to set the gas diffusivity for the trapped gas in the porous_sat_closed equation. Basically, the gas trapped in closed pores during the imbibition process is allowed to diffuse into the liquid, and this property is a part of that model gas inventory equation R_SHELL_SAT_GASN. Only one model is available for this property:

CONSTANT

This model applies a constant cross-region permeability. It requires a single floating point input:

  • <float1> is the cross region permeability

EXTERNAL_FIELD

This model applies a constant gas diffusivity. It requires a single floating point input:

  • <float1> is the gas diffusivity (L2/t)

Examples#

Porous Shell Gas Diffusivity = CONSTANT 1.e-5

References#

    1. Roberts and P. R. Schunk 2012. in preparation.